Because less animals means less energy that can be used.
D, would be the correct answer because it would help you be more active than to be stiff.
Fish, Worms, Bugs, Any small bug or animal :)
The next phase of the carbon cycle for the carbon source labeled A is fossil fuel emissions.
Photosynthesis occurs in plants, so this isn't the right answer. Ocean storage is in the ocean. Transpiration also has to do with plants.